Previous studies have paid little attention to analyzing the impact of agglomeration externalities on a firm’s survival, especially for developing countries. This study applies various survival analysis methods to examine the relationship of three main types of agglomeration externalities: specialization, diversification (related variety and unrelated variety), and urbanization on the survival of firms in Vietnam, with respect to different types of firms ownership: state-owned firms, foreign-owned firms, and domestic private firms. This study confirms the positive role of specialization in reducing the exit probability for firms, especially for foreign-owned firms. The survival probability of foreign-owned firms and domestic private firms is insensitive to any type of diversification, and only related variety increases the survival chance for state-owned firms. In contrast, urbanization has a small negative impact on domestic private firms.